Method der

cadquery/occ_impl/nurbs.py:188–192

(self, us: NDArray, dorder: int)

        )

    def der(self, us: NDArray, dorder: int) -> NDArray:

        return nbCurveDer(
            np.atleast_1d(us), self.order, dorder, self.knots, self.pts, self.periodic
        )


class Surface(NamedTuple):